<template>
  <div class="wrapper" ref="wrapper">
    <div class="content">
      <slot></slot>
    </div>
  </div>
</template>

<script>
import BScroll from 'better-scroll'

export default {
  name: "Scroll",
  props:{
    probeType:{
      type:Number,
      default:0
    },
    pullUpLoad:{
      type:Boolean,
      default:false
    }
  },
  data(){
    return{
      scroll:null,
    }
  },
  mounted(){
    //1.创建BScroll对象
    this.scroll = new BScroll(this.$refs.wrapper,{
      click:true,
      probeType:this.probeType,
      pullUpLoad:this.pullUpLoad
    })
   // 2.监听滚动的位置
      if (this.probeType === 2 || this.probeType === 3) {
        this.scroll.on('scroll', (position) => {
          // console.log(position);
          this.$emit('scroll', position)
        })
      }

    //3.监听scroll滚动到底部
    if(this.pullUpLoad){
      this.scroll.on('pullingUp',() => {
        this.$emit('pullingUp')
      })
    }
  },


  methods:{
    scrollTo(x,y,time=300){
     this.scroll && this.scroll.scrollTo(x,y,time)
    },
    finishPullUp(){
      this.scroll && this.scroll.finishPullUp()
    },
    refresh(){
      this.scroll && this.scroll.refresh()
    },
    getCurrentY() {
      return this.scroll ? this.scroll.y : 0
    }
  }
}
</script>

<style>

</style>